带上盖物业开发的地铁运用库防排烟设计及数值模拟研究
Smoke management design and numerical simulation of metro depot with development of upper covers
摘要：
针对带上盖物业开发的重庆金鳌寺地铁运用库项目，根据不同的火灾规模设计了2套排烟系统方案，对应的任一防烟分区排烟量分别为253 200 m3/h和133 200 m3/h。采用FDS软件开展了数值模拟研究，验证了2套排烟系统的排烟效果。结果表明，该项目地铁运用库中部、前部或右部任一位置发生8 MW火灾时，方案1的排烟系统能够有效排烟，烟气层底部距地高度均满足最小清晰高度要求。当该项目地铁运用库中部分别发生2.5 MW和8 MW火灾时，方案2的排烟系统均能有效排烟。
Abstract：
For the Chongqing Jin’aosi metro depot with the development of upper covers, two sets of smoke exhaust systems are designed according to different heat release rates, and the corresponding smoke exhaust rate of any smoke control zone is 253 200 m3/h and 133 200 m3/h respectively. The numerical simulation is carried out by using FDS software to verify the smoke exhaust effect of the smoke exhaust systems. The results show that in cases of 8 MW fire occuring in the middle, front or right of the metro depot, the smoke exhaust system of the scheme 1 can exhaust the smoke effectively, and the height from the bottom of the smoke layer to the ground meets the minimum clear height requirements. When 2.5 MW and 8 MW fires occur in the middle of the metro depot respectively, the smoke exhaust system of the scheme 2 can exhaust smoke effectively.
Keywords:development of upper cover; metro depot; smoke management design; numerical simulation; smoke exhaust rate